Maps. Maryland. Magnetic maps of Worcester County and part of Wicomico County, Md., show anomalies in total magnetic intensity; oil and gas investigations, preliminary map 40 [with text], prepared by J. R. Balsley, M. S. Walton, D. L. Rossman, J. P. Fitzsimmons, M. E. Hill and W. W. Peters. Scale 1 m=0.5 in. n. p.

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